CN2498417Y

CN2498417Y - Sluice valve for pipe

Info

Publication number: CN2498417Y
Application number: CN 01259232
Authority: CN
Inventors: 张春风
Original assignee: Individual
Current assignee: Individual
Priority date: 2001-09-03
Filing date: 2001-09-03
Publication date: 2002-07-03
Anticipated expiration: 2011-09-03

Abstract

Disclosed is a novel pipeline gate valve, comprising a valve body, a valve cap, a valve seat, flashboards and a valve handle. A clip is fixed at the upper part of the valve handle; each flashboard is made of two symmetrical horseshoe-shaped plates which are lapped over and the interface of the two plates is provided with a linkage groove in which a linkage piece is arranged; both outer sidefaces of each horseshoe-shaped plate are provided with truncated cones which are sleeved with annular sealing pieces; the two horseshoe-shaped plates can move up and down under the drive of the valve handle through the linkage piece; the flashboards are suspended and can be positioned at will; the wedge head of a linkage piece acts on the slanting undersides of the two bevel grooves of the flashboards to make the flashboards generate horizontal forces to compact the sealing surface; when the valve is opened, the wedge head can move upwards and retreat from the undersides of the two bevel grooves easily, in this way, the two flashboards are disengaged and will be opened after the flashboards are lifted, which is energy-saving and causes no damage to the sealing surface.

Description

The novel pipeline gate valve

Technical field

Real novel a kind of pipeline valve, the particularly a kind of novel gate valve of relating to of this usefulness.

Background technique

Present gate valve structure complexity, its sealing surface and valve base chamber have sliding friction, are easy to wearing and tearing and influence sealability; Its flashboard directly is connected with valve rod, and flashboard can not be in place freely when closing and open, and causes being not closed completely, sometimes even can damage valve rod or flashboard link and sealing surface

Spend bright content

The purpose of this utility model just provides a kind of simple in structure, opens and closes the novel pipeline gate valve of good seal easily.

Technical solutions of the utility model are: comprise valve body, valve gap, valve seat, flashboard and valve rod, on valve rod top fixedly jump ring is arranged, it is characterized in that: described flashboard is by overlapping the forming of horse shoe shaped plate of two symmetries, at its junction plane one linked slot is arranged, in this groove, clutch is arranged, two outer side surfaces at the horse shoe shaped plate respectively have a round platform, outside it, be with the ring packing sheet, described linked slot is made of a T-slot and two surface grooves, the translot of described T-slot is positioned at the straight flange above the water chestnut plate, respectively there is a surface groove vertical slot both sides at T-slot, its upper end, bottom surface is crossing with the translot bottom land of T-slot, intersect with horse shoe shaped plate inner side surface near T-slot vertical slot lower end its lower end, and the translot length of T type groove is wider than in the both sides of this surface groove; Described clutch is a convex, in the middle of its lower end a recess is arranged, and is Stem Mut at the vertical center of this convex clutch, and both sides are the sphenocephalies that the inclined-plane constituted that cooperate with surface groove in the described flashboard before and after the lower end of this clutch; Between valve gap and valve rod, sealing pair is arranged.

Described sealing pair comprises the filler and the follower on bulge loop on the valve rod and seal washer up and down thereof, top.

Described seal washer is copper.

The utility model advantage is: two horse shoe shaped flashboards move up and down under the drive of valve rod by clutch therebetween, and flashboard is in suspension, can be in place freely; The sphenocephaly of clutch acts on the ramped bottom surface of two flashboard surface grooves, make it produce the horizontal tight front cover of defeating, sphenocephaly is easy to upwards withdraw from when Open valve, and two flashboards are unclamped, upwards mention flashboard subsequently again and realize to open, both laborsavingly also can not damage sealing surface; When closing, when flashboard dropped to valve port, the flashboard of media outlet cut out under pressure medium, and the pressure difference of another flashboard both sides is disappeared, so very laborsaving when closing; Do not have linkage structure between flashboard and the clutch,, sealing is improved so can freely be adjacent to valve seat.In addition, adopt two washer sealings in the sealing of valve rod and valve cover chamber, when switch valve, the bulge loop on the valve rod compress respectively or under packing ring, improved sealing.

Below in conjunction with drawings and Examples the utility model is further specified.

Description of drawings

Fig. 1 is that the utility model general structure is analysed and observe;

Fig. 2 is the view that the utility model horse shoe shaped flashboard has the linked slot one side;

Fig. 3 is the A-A sectional view of Fig. 2;

Fig. 4 is the back elevation of Fig. 2;

Fig. 5 is the structural drawing of clutch, and wherein a figure is a front elevation, and b figure is a left view, and c figure is a worm's eye view.

Fig. 6 is the schematic representation of the utility model horse shoe shaped flashboard and clutch combination, and wherein a figure is a front elevation, and b figure is the B-B sectional view of a figure.

Embodiment

Referring to Fig. 1, the utility model comprises valve body 1, valve gap 8, valve seat 2, flashboard 3 and valve rod 4, on valve rod 4 tops fixedly jump ring 5 is arranged, and described flashboard 3 is by horse shoe shaped plate 31 overlapping the forming of two symmetries, at its junction plane one linked slot 32 is arranged, clutch 6 is arranged in this groove.Two outer side surfaces at horse shoe shaped plate 31 respectively have a round platform 33, outside it, be with ring packing sheet 7, between valve gap and valve rod sealing pair is arranged, the sealing pair comprises bulge loop 41 and seal washer up and down 42 and 43 on the valve rod 4, filler 44 at an upper portion thereof and follower 45.Described seal washer 42 and 43 is copper.

Structural drawing referring to the horse shoe shaped plate 31 of the present utility model of Fig. 2-shown in Figure 4.At its outer side surface middle part one round platform 33 is arranged, be with the diaphragm seal 7 of annular in this round platform outer; In the another side is linked slot 32, and it is made of T-slot 321 and the surface groove 322 that is positioned at both sides, its underpart.T-slot 321 translot length are wider than at these surface groove two ends, form downward step at an upper portion thereof.

Referring to Fig. 5, clutch 6 of the present utility model is a convex, and there is recess 61 lower end, and its profile matches with the linked slot 32 of horse shoe shaped plate 31.The sphenocephaly that the inclined-plane constitutes 62 of front and back is arranged in the lower end, is Stem Mut 63 at clutch 6 vertical centers, drives clutches 6 with valve rod 4 and moves up and down.

Referring to Fig. 6, this figure expresses the structural drawing in the linked slot 32 that clutch 6 places horse shoe shaped plate 31, the projection of sphenocephaly 62 both sides of clutch 6 just in time places under the step of surface groove 322 both sides in the linked slot 32, can drive horse shoe shaped plate 31 when clutch 6 moves up moves, when moving down, valve plate freely drops to valve port, the sphenocephaly 62 of clutch 6 struts two horse shoe shaped plates 31 to both sides, produce sealing force, this structure has been eliminated the sliding friction between flashboard diaphragm seal 7 and the valve seat 2, avoid the wearing and tearing of sealing surface, improved sealing and working life, also reduced to open and close used power.

Claims

1, a kind of novel pipeline gate valve, comprise valve body, valve gap, valve seat, flashboard and valve rod, on valve rod top fixedly jump ring is arranged, it is characterized in that: described flashboard is by overlapping the forming of horse shoe shaped plate of two symmetries, at its junction plane one linked slot is arranged, in this groove, clutch is arranged, two outer side surfaces at the horse shoe shaped plate respectively have a round platform, outside it, be with the ring packing sheet, described linked slot is made of a T-slot and two surface grooves, the translot of described T-slot is positioned at the straight flange above the water chestnut plate, respectively there is a surface groove vertical slot both sides at T-slot, its upper end, bottom surface is crossing with the translot bottom land of T-slot, and intersect with horse shoe shaped plate inner side surface near T-slot vertical slot lower end its lower end, and the translot length of T type groove is wider than in the both sides of this surface groove; Described clutch is a convex, in the middle of its lower end a recess is arranged, and is Stem Mut at the vertical center of this convex clutch, and both sides are the sphenocephalies that the inclined-plane constituted that cooperate with surface groove in the described flashboard before and after the lower end of this clutch; Between valve gap and valve rod, sealing pair is arranged.

2, according to right 1 described novel pipeline gate valve, it is characterized in that: described sealing pair comprises the filler and the follower on bulge loop on the valve rod and seal washer up and down thereof, top.

3, novel pipeline gate valve according to claim 2 is characterized in that: described seal washer is copper.